Mailbox top adornment



FIG. 1 is a fragmentary right side elevational view of a mailbox top adornment showing our new design, each side is a mirror image; and,

FIG. 2 is a top plan view thereof, the undisclosed bottom is not part of the claimed design.

The broken lines in FIG. 1 and 2 are for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a mailbox top adornment, as shown and described. 